5 - Sense LWEU Series
Maintenance
NSnappy Sense series devices are delicate measuring instruments that need to be handled with
care. Even though the case is made of durable plastics and silicone, the sensor probe or internal
electronics can be damaged by drops or hard impacts. If there is any suspicion that the device is
damaged, send it to be checked and serviced.
Replacing the battery
The devices are powered with a 3.6 V Lithium Thionyl Chloride battery pack. The battery is not
user replaceable. Annual service and calibration subscription is available for these devices and
they include a periodic calibration of the sensor and battery replacement. Under normal use and
conditions, the battery will last for at least a year. If needed, send the device to service for
battery replacement.
Cleaning
It is important to keep the device and especially the sensor probe or lens clean. Clean the device
using a soft, non-abrasive cloth moistened with a mild detergent solution. Be careful not to
scratch the IR sensor’s lens.
Do not use any abrasive devices or substances when cleaning.
Do not clean the device in a dishwashing machine.
Service
There are no user serviceable parts in these devices. If the device needs service, contact your
NSnappy service partner for more.
Troubleshooting
The readings do not appear or update in NSnappy
1.
Check that the LED blinks. If the LED is not blinking at all after pressing the power
button, send the device for service as the battery might be empty.
2.
Check that the blue LED on the device switches from blinking in bursts of two to blink
single blinks. This indicates that the device has connected to the hub device.
3.
If the device keeps blinking in bursts of two blinks, check that there is an NSnappy Hub
LWEU-N device for a wireless LoRaWAN connection installed on the site and that you
are using a Sense LWEU-N device within a reasonable range from it. Typical range of the
LoRaWAN wireless connection indoors is from tens to hundreds of meters, depending on
the materials of the building structures.
